Fix bug in partest.DPConsoleRunner

The bug was that we declared case classes like:
  case class CompFailed() extends NegTestState
but we used their companion objects like in:
  case _ => CompFailed

Interestingly, this bug was caught by compiling this code with dotty,
instead of `failureStates` getting inferred to be of type `AnyRef`, it
ended up being a union of object types, this allows dotty to realize our
subsequent pattern match on `failureStates` cannot possibly succeed:

-- Error: /home/smarter/opt/dotty/compiler/test/dotty/partest/DPConsoleRunner.scala
353 |          case CompFailedButWrongDiff() =>
    |          ^
    | missing parameter type for parameter x$1 of expanded function x$1 =>
    |   x$1 @unchecked match
    |     {
    |       case CompFailedButWrongDiff() =>
    |         nextTestActionFailing(s"output differs")
    |         true
    |       case _ =>
    |         false
    |     }, expected = ?
-- Error: /home/smarter/opt/dotty/compiler/test/dotty/partest/DPConsoleRunner.scala
353 |          case CompFailedButWrongDiff() =>
    |               ^^^^^^^^^^^^^^^^^^^^^^^^
    |Pattern type CompFailedButWrongDiff is neither a subtype nor a supertype of selector type CompSucceeded | CompFailedButWrongNErr | CompFailed | CompFailedButWrongDiff'where:    CompFailedButWrongDiff  is a class in method runNegTest
    |          CompFailedButWrongDiff' is a object in method runNegTest

0 files changed, 0 insertions, 0 deletions